This paper analyzes the impact of rate regulation on the structure of insurance markets for private passenger automobile insurance. The paper argues that states' restrictions on automobile insurers' rates of return will distort the structure of the market by distorting insurers' entry and output...

This paper tests for regulation-induced adverse selection in the Massachusetts automobile insurance market during the regulated period 1990-2005. The paper demonstrates the application of the Poterba-Finkelstein (2014) unused-observables test for adverse selection in a regulated insurance market...